1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * GtkAccelLabel: GtkLabel with accelerator monitoring facilities.
5 * Copyright (C) 1998 Tim Janik
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
24 * Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
25 * file for a list of people on the GTK+ Team. See the ChangeLog
26 * files for a list of changes. These files are distributed with
27 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
33 #include "gtksignal.h"
34 #include "gtkaccellabel.h"
42 static void gtk_accel_label_class_init (GtkAccelLabelClass *klass);
43 static void gtk_accel_label_init (GtkAccelLabel *accel_label);
44 static void gtk_accel_label_set_arg (GtkObject *object,
47 static void gtk_accel_label_get_arg (GtkObject *object,
50 static void gtk_accel_label_destroy (GtkObject *object);
51 static void gtk_accel_label_finalize (GtkObject *object);
52 static void gtk_accel_label_size_request (GtkWidget *widget,
53 GtkRequisition *requisition);
54 static gint gtk_accel_label_expose_event (GtkWidget *widget,
55 GdkEventExpose *event);
56 static gboolean gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label);
58 static GtkAccelLabelClass *accel_label_class = NULL;
59 static GtkLabelClass *parent_class = NULL;
63 gtk_accel_label_get_type (void)
65 static GtkType accel_label_type = 0;
67 if (!accel_label_type)
69 static const GtkTypeInfo accel_label_info =
72 sizeof (GtkAccelLabel),
73 sizeof (GtkAccelLabelClass),
74 (GtkClassInitFunc) gtk_accel_label_class_init,
75 (GtkObjectInitFunc) gtk_accel_label_init,
76 /* reserved_1 */ NULL,
77 /* reserved_2 */ NULL,
78 (GtkClassInitFunc) NULL,
81 accel_label_type = gtk_type_unique (gtk_label_get_type (), &accel_label_info);
84 return accel_label_type;
88 gtk_accel_label_class_init (GtkAccelLabelClass *class)
90 GtkObjectClass *object_class;
91 GtkWidgetClass *widget_class;
92 GtkMiscClass *misc_class;
93 GtkLabelClass *label_class;
95 accel_label_class = class;
96 object_class = (GtkObjectClass*) class;
97 widget_class = (GtkWidgetClass*) class;
98 misc_class = (GtkMiscClass*) class;
99 label_class = (GtkLabelClass*) class;
101 parent_class = gtk_type_class (gtk_label_get_type ());
103 gtk_object_add_arg_type ("GtkAccelLabel::accel_widget", GTK_TYPE_WIDGET, GTK_ARG_READWRITE, ARG_ACCEL_WIDGET);
105 object_class->set_arg = gtk_accel_label_set_arg;
106 object_class->get_arg = gtk_accel_label_get_arg;
107 object_class->destroy = gtk_accel_label_destroy;
108 object_class->finalize = gtk_accel_label_finalize;
110 widget_class->size_request = gtk_accel_label_size_request;
111 widget_class->expose_event = gtk_accel_label_expose_event;
113 class->signal_quote1 = g_strdup ("<:");
114 class->signal_quote2 = g_strdup (":>");
115 class->mod_name_shift = g_strdup ("Shft");
116 class->mod_name_control = g_strdup ("Ctl");
117 class->mod_name_alt = g_strdup ("Alt");
118 class->mod_separator = g_strdup ("+");
119 class->accel_seperator = g_strdup (" / ");
120 class->latin1_to_char = TRUE;
124 gtk_accel_label_set_arg (GtkObject *object,
128 GtkAccelLabel *accel_label;
130 accel_label = GTK_ACCEL_LABEL (object);
134 case ARG_ACCEL_WIDGET:
135 gtk_accel_label_set_accel_widget (accel_label, (GtkWidget*) GTK_VALUE_OBJECT (*arg));
143 gtk_accel_label_get_arg (GtkObject *object,
147 GtkAccelLabel *accel_label;
149 accel_label = GTK_ACCEL_LABEL (object);
153 case ARG_ACCEL_WIDGET:
154 GTK_VALUE_OBJECT (*arg) = (GtkObject*) accel_label->accel_widget;
157 arg->type = GTK_TYPE_INVALID;
163 gtk_accel_label_init (GtkAccelLabel *accel_label)
165 accel_label->queue_id = 0;
166 accel_label->accel_padding = 3;
167 accel_label->accel_widget = NULL;
168 accel_label->accel_string = NULL;
170 gtk_accel_label_refetch (accel_label);
174 gtk_accel_label_new (const gchar *string)
176 GtkAccelLabel *accel_label;
178 g_return_val_if_fail (string != NULL, NULL);
180 accel_label = gtk_type_new (GTK_TYPE_ACCEL_LABEL);
182 gtk_label_set_text (GTK_LABEL (accel_label), string);
184 return GTK_WIDGET (accel_label);
188 gtk_accel_label_destroy (GtkObject *object)
190 GtkAccelLabel *accel_label;
192 g_return_if_fail (object != NULL);
193 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
195 accel_label = GTK_ACCEL_LABEL (object);
197 gtk_accel_label_set_accel_widget (accel_label, NULL);
199 GTK_OBJECT_CLASS (parent_class)->destroy (object);
203 gtk_accel_label_finalize (GtkObject *object)
205 GtkAccelLabel *accel_label;
207 g_return_if_fail (object != NULL);
208 g_return_if_fail (GTK_IS_ACCEL_LABEL (object));
210 accel_label = GTK_ACCEL_LABEL (object);
212 g_free (accel_label->accel_string);
214 GTK_OBJECT_CLASS (parent_class)->finalize (object);
218 gtk_accel_label_get_accel_width (GtkAccelLabel *accel_label)
220 g_return_val_if_fail (accel_label != NULL, 0);
221 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), 0);
223 return (accel_label->accel_string_width +
224 (accel_label->accel_string_width ? accel_label->accel_padding : 0));
228 gtk_accel_label_size_request (GtkWidget *widget,
229 GtkRequisition *requisition)
231 GtkAccelLabel *accel_label;
233 g_return_if_fail (widget != NULL);
234 g_return_if_fail (GTK_IS_ACCEL_LABEL (widget));
235 g_return_if_fail (requisition != NULL);
237 accel_label = GTK_ACCEL_LABEL (widget);
239 if (GTK_WIDGET_CLASS (parent_class)->size_request)
240 GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
242 accel_label->accel_string_width = gdk_string_width (GTK_WIDGET (accel_label)->style->font,
243 accel_label->accel_string);
247 gtk_accel_label_expose_event (GtkWidget *widget,
248 GdkEventExpose *event)
251 GtkAccelLabel *accel_label;
253 g_return_val_if_fail (widget != NULL, FALSE);
254 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (widget), FALSE);
255 g_return_val_if_fail (event != NULL, FALSE);
257 accel_label = GTK_ACCEL_LABEL (widget);
258 misc = GTK_MISC (accel_label);
260 if (GTK_WIDGET_DRAWABLE (accel_label))
264 ac_width = gtk_accel_label_get_accel_width (accel_label);
266 if (widget->allocation.width >= widget->requisition.width + ac_width)
271 widget->allocation.width -= ac_width;
272 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
273 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
274 widget->allocation.width += ac_width;
276 x = widget->allocation.x + widget->allocation.width - misc->xpad - ac_width;
278 y = (widget->allocation.y * (1.0 - misc->yalign) +
279 (widget->allocation.y + widget->allocation.height -
280 (widget->requisition.height - misc->ypad * 2)) *
281 misc->yalign + widget->style->font->ascent) + 1.5;
283 if (GTK_WIDGET_STATE (accel_label) == GTK_STATE_INSENSITIVE)
284 gdk_draw_string (widget->window,
286 widget->style->white_gc,
289 accel_label->accel_string);
291 gdk_draw_string (widget->window,
293 widget->style->fg_gc[GTK_WIDGET_STATE (accel_label)],
296 accel_label->accel_string);
300 if (GTK_WIDGET_CLASS (parent_class)->expose_event)
301 GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
309 gtk_accel_label_queue_refetch (GtkAccelLabel *accel_label)
311 g_return_if_fail (accel_label != NULL);
312 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
314 if (accel_label->queue_id == 0)
315 accel_label->queue_id = gtk_idle_add_priority (G_PRIORITY_HIGH_IDLE,
316 (GtkFunction) gtk_accel_label_refetch_idle,
321 gtk_accel_label_set_accel_widget (GtkAccelLabel *accel_label,
322 GtkWidget *accel_widget)
324 g_return_if_fail (accel_label != NULL);
325 g_return_if_fail (GTK_IS_ACCEL_LABEL (accel_label));
326 if (accel_widget != NULL)
327 g_return_if_fail (GTK_IS_WIDGET (accel_widget));
329 if (accel_widget != accel_label->accel_widget)
331 if (accel_label->accel_widget)
333 gtk_signal_disconnect_by_func (GTK_OBJECT (accel_label->accel_widget),
334 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
336 gtk_widget_unref (accel_label->accel_widget);
338 if (accel_label->queue_id)
340 gtk_idle_remove (accel_label->queue_id);
341 accel_label->queue_id = 0;
343 accel_label->accel_widget = accel_widget;
344 if (accel_label->accel_widget)
346 gtk_widget_ref (accel_label->accel_widget);
347 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
349 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
350 GTK_OBJECT (accel_label));
351 gtk_signal_connect_object_after (GTK_OBJECT (accel_label->accel_widget),
352 "remove-accelerator",
353 GTK_SIGNAL_FUNC (gtk_accel_label_queue_refetch),
354 GTK_OBJECT (accel_label));
360 gtk_accel_label_refetch_idle (GtkAccelLabel *accel_label)
364 GDK_THREADS_ENTER ();
365 retval = gtk_accel_label_refetch (accel_label);
366 GDK_THREADS_LEAVE ();
372 gtk_accel_label_refetch (GtkAccelLabel *accel_label)
374 GtkAccelLabelClass *class;
376 g_return_val_if_fail (accel_label != NULL, FALSE);
377 g_return_val_if_fail (GTK_IS_ACCEL_LABEL (accel_label), FALSE);
379 class = GTK_ACCEL_LABEL_CLASS (GTK_OBJECT (accel_label)->klass);
381 g_free (accel_label->accel_string);
382 accel_label->accel_string = NULL;
384 if (accel_label->accel_widget)
386 GtkAccelEntry *entry = NULL;
389 slist = gtk_accel_group_entries_from_object (GTK_OBJECT (accel_label->accel_widget));
390 for (; slist; slist = slist->next)
393 if (entry->accel_flags & GTK_ACCEL_VISIBLE)
398 gstring = g_string_new (accel_label->accel_string);
400 g_string_append (gstring, class->accel_seperator);
402 g_string_append (gstring, " ");
404 if (entry->accel_flags & GTK_ACCEL_SIGNAL_VISIBLE)
406 g_string_append (gstring, class->signal_quote1);
407 g_string_append (gstring, gtk_signal_name (entry->signal_id));
408 g_string_append (gstring, class->signal_quote2);
412 if (entry->accelerator_mods & GDK_SHIFT_MASK)
414 g_string_append (gstring, class->mod_name_shift);
417 if (entry->accelerator_mods & GDK_CONTROL_MASK)
420 g_string_append (gstring, class->mod_separator);
421 g_string_append (gstring, class->mod_name_control);
424 if (entry->accelerator_mods & GDK_MOD1_MASK)
427 g_string_append (gstring, class->mod_separator);
428 g_string_append (gstring, class->mod_name_alt);
433 g_string_append (gstring, class->mod_separator);
434 if (entry->accelerator_key < 0x80 ||
435 (entry->accelerator_key > 0x80 &&
436 entry->accelerator_key <= 0xff &&
437 class->latin1_to_char))
439 switch (entry->accelerator_key)
442 g_string_append (gstring, "Space");
445 g_string_append (gstring, "Backslash");
448 g_string_append_c (gstring, toupper (entry->accelerator_key));
456 tmp = gtk_accelerator_name (entry->accelerator_key, 0);
457 if (tmp[0] != 0 && tmp[1] == 0)
458 tmp[0] = toupper (tmp[0]);
459 g_string_append (gstring, tmp);
463 g_free (accel_label->accel_string);
464 accel_label->accel_string = gstring->str;
465 g_string_free (gstring, FALSE);
470 if (!accel_label->accel_string)
471 accel_label->accel_string = g_strdup ("");
473 if (accel_label->queue_id)
475 gtk_idle_remove (accel_label->queue_id);
476 accel_label->queue_id = 0;
479 gtk_widget_queue_resize (GTK_WIDGET (accel_label));